---
title: "74xx_IEEE"
symbolcount: "185"
layout: symlib
archivesize: "13K"
---

<table>
<tr>
<th>Symbol</th>
<th>Description</th>
</tr>
<tr>
<td>7400</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7401</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7402</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7403</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7404</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7405</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7406</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7407</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7408</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7409</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7410</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7411</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7412</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74125</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74126</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74128</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7413</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74132</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74136</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7414</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74141</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74145</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74147</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74148</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74151</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74153</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74154</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74155</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74156</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74157</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74158</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74159</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7416</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74164</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74165</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74166</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7417</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74173</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74176</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74196</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7420</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7421</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7422</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74246</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74247</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74248</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74249</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7425</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74251</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74253</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7426</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7427</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74278</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7428</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74293</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7430</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7432</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7433</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7437</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7438</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7439</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7440</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7442</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74425</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74426</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7443</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7444</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7445</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7446</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7447</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7448</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7451</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7454</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7483</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7485</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7486</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7490</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7491</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7492</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7493</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7495</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>7496</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC237</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC238</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC36</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC804</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC805</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC808</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74HC832</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS133</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS137</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS138</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS139</td><td>Description: Dual Decoder 1 of 4, Active low outputs<br>Keys: TTL DECOD4<br>Datasheet: <a href="http://www.ti.com/lit/ds/symlink/sn74ls139a.pdf">http://www.ti.com/lit/ds/symlink/sn74ls139a.pdf</a></td>
</tr>
<tr>
<td>74LS15</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS152</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS160</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS161</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS162</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS163</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS168</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS169</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS170</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS177</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS18</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS19</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS190</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS191</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS192</td><td>Description: Synchronous 4-bit Up/Down (2 clk) counter<br>Keys: TTL CNT CNT4<br>Datasheet: <a href="http://www.ti.com/lit/ds/symlink/sn74ls193.pdf">http://www.ti.com/lit/ds/symlink/sn74ls193.pdf</a></td>
</tr>
<tr>
<td>74LS193</td><td>Description: Synchronous 4-bit Up/Down (2 clk) counter<br>Keys: TTL CNT CNT4<br>Datasheet: <a href="http://www.ti.com/lit/ds/symlink/sn74ls193.pdf">http://www.ti.com/lit/ds/symlink/sn74ls193.pdf</a></td>
</tr>
<tr>
<td>74LS194</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS195</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS197</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS239</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS24</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS240</td><td>Description: Octal Buffer and Line Driver With 3-State Output, active-low enables, inverting outputs<br>Keys: 7400 logic ttl low power schottky<br>Datasheet: <a href="http://www.ti.com/lit/ds/symlink/sn74ls240.pdf">http://www.ti.com/lit/ds/symlink/sn74ls240.pdf</a></td>
</tr>
<tr>
<td>74LS241</td><td>Description: Octal Buffer and Line Driver With 3-State Output, complementary enables, non-inverting outputs<br>Keys: 7400 logic ttl low power schottky<br>Datasheet: <a href="http://www.ti.com/lit/ds/symlink/sn74ls241.pdf">http://www.ti.com/lit/ds/symlink/sn74ls241.pdf</a></td>
</tr>
<tr>
<td>74LS242</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS243</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS244</td><td>Description: Octal Buffer and Line Driver With 3-State Output, active-low enables, non-inverting outputs<br>Keys: 7400 logic ttl low power schottky<br>Datasheet: <a href="http://www.ti.com/lit/ds/symlink/sn74ls244.pdf">http://www.ti.com/lit/ds/symlink/sn74ls244.pdf</a></td>
</tr>
<tr>
<td>74LS245</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS257</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS258</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS266</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS280</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS283</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS290</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS295</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS298</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS299</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS323</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS347</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS348</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS352</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS353</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS365</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS366</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS367</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS368</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS386</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS390</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS395</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS396</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS398</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS399</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS445</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS447</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS465</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS466</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS467</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS468</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS49</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS540</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS541</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS55</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS56</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS57</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS590</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS591</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS594</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS595</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS596</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS597</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS599</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS620</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS621</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS622</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS623</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS638</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS639</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS640</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS641</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS642</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS645</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS668</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS669</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS670</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS682</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS683</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS684</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS685</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS686</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS687</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS688</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74LS689</td><td><i>Description missing</i></td>
</tr>
<tr>
<td>74S140</td><td><i>Description missing</i></td>
</tr>
</table>
